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<FONT color="green">001</FONT>    /*<a name="line.1"></a>
<FONT color="green">002</FONT>     * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a>
<FONT color="green">003</FONT>     * contributor license agreements.  See the NOTICE file distributed with<a name="line.3"></a>
<FONT color="green">004</FONT>     * this work for additional information regarding copyright ownership.<a name="line.4"></a>
<FONT color="green">005</FONT>     * The ASF licenses this file to You under the Apache License, Version 2.0<a name="line.5"></a>
<FONT color="green">006</FONT>     * (the "License"); you may not use this file except in compliance with<a name="line.6"></a>
<FONT color="green">007</FONT>     * the License.  You may obtain a copy of the License at<a name="line.7"></a>
<FONT color="green">008</FONT>     *<a name="line.8"></a>
<FONT color="green">009</FONT>     *      http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a>
<FONT color="green">010</FONT>     *<a name="line.10"></a>
<FONT color="green">011</FONT>     * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a>
<FONT color="green">012</FONT>     * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a>
<FONT color="green">013</FONT>     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a>
<FONT color="green">014</FONT>     * See the License for the specific language governing permissions and<a name="line.14"></a>
<FONT color="green">015</FONT>     * limitations under the License.<a name="line.15"></a>
<FONT color="green">016</FONT>     */<a name="line.16"></a>
<FONT color="green">017</FONT>    package org.apache.commons.beanutils.converters;<a name="line.17"></a>
<FONT color="green">018</FONT>    <a name="line.18"></a>
<FONT color="green">019</FONT>    import java.lang.reflect.Array;<a name="line.19"></a>
<FONT color="green">020</FONT>    import java.util.Collection;<a name="line.20"></a>
<FONT color="green">021</FONT>    import org.apache.commons.logging.Log;<a name="line.21"></a>
<FONT color="green">022</FONT>    import org.apache.commons.logging.LogFactory;<a name="line.22"></a>
<FONT color="green">023</FONT>    import org.apache.commons.beanutils.BeanUtils;<a name="line.23"></a>
<FONT color="green">024</FONT>    import org.apache.commons.beanutils.ConversionException;<a name="line.24"></a>
<FONT color="green">025</FONT>    import org.apache.commons.beanutils.Converter;<a name="line.25"></a>
<FONT color="green">026</FONT>    <a name="line.26"></a>
<FONT color="green">027</FONT>    /**<a name="line.27"></a>
<FONT color="green">028</FONT>     * Base {@link Converter} implementation that provides the structure<a name="line.28"></a>
<FONT color="green">029</FONT>     * for handling conversion &lt;b&gt;to&lt;/b&gt; and &lt;b&gt;from&lt;/b&gt; a specified type.<a name="line.29"></a>
<FONT color="green">030</FONT>     * &lt;p&gt;<a name="line.30"></a>
<FONT color="green">031</FONT>     * This implementation provides the basic structure for<a name="line.31"></a>
<FONT color="green">032</FONT>     * converting to/from a specified type optionally using a default<a name="line.32"></a>
<FONT color="green">033</FONT>     * value or throwing a {@link ConversionException} if a<a name="line.33"></a>
<FONT color="green">034</FONT>     * conversion error occurs.<a name="line.34"></a>
<FONT color="green">035</FONT>     * &lt;p&gt;<a name="line.35"></a>
<FONT color="green">036</FONT>     * Implementations should provide conversion to the specified<a name="line.36"></a>
<FONT color="green">037</FONT>     * type and from the specified type to a &lt;code&gt;String&lt;/code&gt; value<a name="line.37"></a>
<FONT color="green">038</FONT>     * by implementing the following methods:<a name="line.38"></a>
<FONT color="green">039</FONT>     * &lt;ul&gt;<a name="line.39"></a>
<FONT color="green">040</FONT>     *     &lt;li&gt;&lt;code&gt;convertToString(value)&lt;/code&gt; - convert to a String<a name="line.40"></a>
<FONT color="green">041</FONT>     *        (default implementation uses the objects &lt;code&gt;toString()&lt;/code&gt;<a name="line.41"></a>
<FONT color="green">042</FONT>     *        method).&lt;/li&gt;<a name="line.42"></a>
<FONT color="green">043</FONT>     *     &lt;li&gt;&lt;code&gt;convertToType(Class, value)&lt;/code&gt; - convert<a name="line.43"></a>
<FONT color="green">044</FONT>     *         to the specified type&lt;/li&gt;<a name="line.44"></a>
<FONT color="green">045</FONT>     * &lt;/ul&gt;<a name="line.45"></a>
<FONT color="green">046</FONT>     *<a name="line.46"></a>
<FONT color="green">047</FONT>     * @version $Revision: 640131 $ $Date: 2008-03-23 02:10:31 +0000 (Sun, 23 Mar 2008) $<a name="line.47"></a>
<FONT color="green">048</FONT>     * @since 1.8.0<a name="line.48"></a>
<FONT color="green">049</FONT>     */<a name="line.49"></a>
<FONT color="green">050</FONT>    public abstract class AbstractConverter implements Converter {<a name="line.50"></a>
<FONT color="green">051</FONT>    <a name="line.51"></a>
<FONT color="green">052</FONT>        /** Debug logging message to indicate default value configuration */<a name="line.52"></a>
<FONT color="green">053</FONT>        private static final String DEFAULT_CONFIG_MSG =<a name="line.53"></a>
<FONT color="green">054</FONT>            "(N.B. Converters can be configured to use default values to avoid throwing exceptions)";<a name="line.54"></a>
<FONT color="green">055</FONT>    <a name="line.55"></a>
<FONT color="green">056</FONT>        /** Current package name */<a name="line.56"></a>
<FONT color="green">057</FONT>        //    getPackage() below returns null on some platforms/jvm versions during the unit tests.<a name="line.57"></a>
<FONT color="green">058</FONT>    //    private static final String PACKAGE = AbstractConverter.class.getPackage().getName() + ".";<a name="line.58"></a>
<FONT color="green">059</FONT>        private static final String PACKAGE = "org.apache.commons.beanutils.converters.";<a name="line.59"></a>
<FONT color="green">060</FONT>    <a name="line.60"></a>
<FONT color="green">061</FONT>        /**<a name="line.61"></a>
<FONT color="green">062</FONT>         * Logging for this instance.<a name="line.62"></a>
<FONT color="green">063</FONT>         */<a name="line.63"></a>
<FONT color="green">064</FONT>        private transient Log log;<a name="line.64"></a>
<FONT color="green">065</FONT>    <a name="line.65"></a>
<FONT color="green">066</FONT>        /**<a name="line.66"></a>
<FONT color="green">067</FONT>         * Should we return the default value on conversion errors?<a name="line.67"></a>
<FONT color="green">068</FONT>         */<a name="line.68"></a>
<FONT color="green">069</FONT>        private boolean useDefault = false;<a name="line.69"></a>
<FONT color="green">070</FONT>    <a name="line.70"></a>
<FONT color="green">071</FONT>        /**<a name="line.71"></a>
<FONT color="green">072</FONT>         * The default value specified to our Constructor, if any.<a name="line.72"></a>
<FONT color="green">073</FONT>         */<a name="line.73"></a>
<FONT color="green">074</FONT>        private Object defaultValue = null;<a name="line.74"></a>
<FONT color="green">075</FONT>    <a name="line.75"></a>
<FONT color="green">076</FONT>        // ----------------------------------------------------------- Constructors<a name="line.76"></a>
<FONT color="green">077</FONT>    <a name="line.77"></a>
<FONT color="green">078</FONT>        /**<a name="line.78"></a>
<FONT color="green">079</FONT>         * Construct a &lt;i&gt;Converter&lt;/i&gt; that throws a<a name="line.79"></a>
<FONT color="green">080</FONT>         * &lt;code&gt;ConversionException&lt;/code&gt; if an error occurs.<a name="line.80"></a>
<FONT color="green">081</FONT>         */<a name="line.81"></a>
<FONT color="green">082</FONT>        public AbstractConverter() {<a name="line.82"></a>
<FONT color="green">083</FONT>        }<a name="line.83"></a>
<FONT color="green">084</FONT>    <a name="line.84"></a>
<FONT color="green">085</FONT>        /**<a name="line.85"></a>
<FONT color="green">086</FONT>         * Construct a &lt;i&gt;Converter&lt;/i&gt; that returns a default<a name="line.86"></a>
<FONT color="green">087</FONT>         * value if an error occurs.<a name="line.87"></a>
<FONT color="green">088</FONT>         *<a name="line.88"></a>
<FONT color="green">089</FONT>         * @param defaultValue The default value to be returned<a name="line.89"></a>
<FONT color="green">090</FONT>         * if the value to be converted is missing or an error<a name="line.90"></a>
<FONT color="green">091</FONT>         * occurs converting the value.<a name="line.91"></a>
<FONT color="green">092</FONT>         */<a name="line.92"></a>
<FONT color="green">093</FONT>        public AbstractConverter(Object defaultValue) {<a name="line.93"></a>
<FONT color="green">094</FONT>            setDefaultValue(defaultValue);<a name="line.94"></a>
<FONT color="green">095</FONT>        }<a name="line.95"></a>
<FONT color="green">096</FONT>    <a name="line.96"></a>
<FONT color="green">097</FONT>        // --------------------------------------------------------- Public Methods<a name="line.97"></a>
<FONT color="green">098</FONT>    <a name="line.98"></a>
<FONT color="green">099</FONT>        /**<a name="line.99"></a>
<FONT color="green">100</FONT>         * Indicates whether a default value will be returned or exception<a name="line.100"></a>
<FONT color="green">101</FONT>         * thrown in the event of a conversion error.<a name="line.101"></a>
<FONT color="green">102</FONT>         *<a name="line.102"></a>
<FONT color="green">103</FONT>         * @return &lt;code&gt;true&lt;/code&gt; if a default value will be returned for<a name="line.103"></a>
<FONT color="green">104</FONT>         * conversion errors or &lt;code&gt;false&lt;/code&gt; if a {@link ConversionException}<a name="line.104"></a>
<FONT color="green">105</FONT>         * will be thrown.<a name="line.105"></a>
<FONT color="green">106</FONT>         */<a name="line.106"></a>
<FONT color="green">107</FONT>        public boolean isUseDefault() {<a name="line.107"></a>
<FONT color="green">108</FONT>            return useDefault;<a name="line.108"></a>
<FONT color="green">109</FONT>        }<a name="line.109"></a>
<FONT color="green">110</FONT>    <a name="line.110"></a>
<FONT color="green">111</FONT>        /**<a name="line.111"></a>
<FONT color="green">112</FONT>         * Convert the input object into an output object of the<a name="line.112"></a>
<FONT color="green">113</FONT>         * specified type.<a name="line.113"></a>
<FONT color="green">114</FONT>         *<a name="line.114"></a>
<FONT color="green">115</FONT>         * @param type Data type to which this value should be converted<a name="line.115"></a>
<FONT color="green">116</FONT>         * @param value The input value to be converted<a name="line.116"></a>
<FONT color="green">117</FONT>         * @return The converted value.<a name="line.117"></a>
<FONT color="green">118</FONT>         * @throws ConversionException if conversion cannot be performed<a name="line.118"></a>
<FONT color="green">119</FONT>         * successfully and no default is specified.<a name="line.119"></a>
<FONT color="green">120</FONT>         */<a name="line.120"></a>
<FONT color="green">121</FONT>        public Object convert(Class type, Object value) {<a name="line.121"></a>
<FONT color="green">122</FONT>    <a name="line.122"></a>
<FONT color="green">123</FONT>            Class sourceType  = value == null ? null : value.getClass();<a name="line.123"></a>
<FONT color="green">124</FONT>            Class targetType  = primitive(type  == null ? getDefaultType() : type);<a name="line.124"></a>
<FONT color="green">125</FONT>    <a name="line.125"></a>
<FONT color="green">126</FONT>            if (log().isDebugEnabled()) {<a name="line.126"></a>
<FONT color="green">127</FONT>                log().debug("Converting"<a name="line.127"></a>
<FONT color="green">128</FONT>                        + (value == null ? "" : " '" + toString(sourceType) + "'")<a name="line.128"></a>
<FONT color="green">129</FONT>                        + " value '" + value + "' to type '" + toString(targetType) + "'");<a name="line.129"></a>
<FONT color="green">130</FONT>            }<a name="line.130"></a>
<FONT color="green">131</FONT>    <a name="line.131"></a>
<FONT color="green">132</FONT>            value = convertArray(value);<a name="line.132"></a>
<FONT color="green">133</FONT>    <a name="line.133"></a>
<FONT color="green">134</FONT>            // Missing Value<a name="line.134"></a>
<FONT color="green">135</FONT>            if (value == null) {<a name="line.135"></a>
<FONT color="green">136</FONT>                return handleMissing(targetType);<a name="line.136"></a>
<FONT color="green">137</FONT>            }<a name="line.137"></a>
<FONT color="green">138</FONT>    <a name="line.138"></a>
<FONT color="green">139</FONT>            sourceType = value.getClass();<a name="line.139"></a>
<FONT color="green">140</FONT>    <a name="line.140"></a>
<FONT color="green">141</FONT>            try {<a name="line.141"></a>
<FONT color="green">142</FONT>                // Convert --&gt; String<a name="line.142"></a>
<FONT color="green">143</FONT>                if (targetType.equals(String.class)) {<a name="line.143"></a>
<FONT color="green">144</FONT>                    return convertToString(value);<a name="line.144"></a>
<FONT color="green">145</FONT>    <a name="line.145"></a>
<FONT color="green">146</FONT>                // No conversion necessary<a name="line.146"></a>
<FONT color="green">147</FONT>                } else if (targetType.equals(sourceType)) {<a name="line.147"></a>
<FONT color="green">148</FONT>                    if (log().isDebugEnabled()) {<a name="line.148"></a>
<FONT color="green">149</FONT>                        log().debug("    No conversion required, value is already a "<a name="line.149"></a>
<FONT color="green">150</FONT>                                        + toString(targetType));<a name="line.150"></a>
<FONT color="green">151</FONT>                    }<a name="line.151"></a>
<FONT color="green">152</FONT>                    return value;<a name="line.152"></a>
<FONT color="green">153</FONT>    <a name="line.153"></a>
<FONT color="green">154</FONT>                // Convert --&gt; Type<a name="line.154"></a>
<FONT color="green">155</FONT>                } else {<a name="line.155"></a>
<FONT color="green">156</FONT>                    Object result = convertToType(targetType, value);<a name="line.156"></a>
<FONT color="green">157</FONT>                    if (log().isDebugEnabled()) {<a name="line.157"></a>
<FONT color="green">158</FONT>                        log().debug("    Converted to " + toString(targetType) +<a name="line.158"></a>
<FONT color="green">159</FONT>                                       " value '" + result + "'");<a name="line.159"></a>
<FONT color="green">160</FONT>                    }<a name="line.160"></a>
<FONT color="green">161</FONT>                    return result;<a name="line.161"></a>
<FONT color="green">162</FONT>                }<a name="line.162"></a>
<FONT color="green">163</FONT>            } catch (Throwable t) {<a name="line.163"></a>
<FONT color="green">164</FONT>                return handleError(targetType, value, t);<a name="line.164"></a>
<FONT color="green">165</FONT>            }<a name="line.165"></a>
<FONT color="green">166</FONT>    <a name="line.166"></a>
<FONT color="green">167</FONT>        }<a name="line.167"></a>
<FONT color="green">168</FONT>    <a name="line.168"></a>
<FONT color="green">169</FONT>        /**<a name="line.169"></a>
<FONT color="green">170</FONT>         * Convert the input object into a String.<a name="line.170"></a>
<FONT color="green">171</FONT>         * &lt;p&gt;<a name="line.171"></a>
<FONT color="green">172</FONT>         * &lt;b&gt;N.B.&lt;/b&gt;This implementation simply uses the value's<a name="line.172"></a>
<FONT color="green">173</FONT>         * &lt;code&gt;toString()&lt;/code&gt; method and should be overriden if a<a name="line.173"></a>
<FONT color="green">174</FONT>         * more sophisticated mechanism for &lt;i&gt;conversion to a String&lt;/i&gt;<a name="line.174"></a>
<FONT color="green">175</FONT>         * is required.<a name="line.175"></a>
<FONT color="green">176</FONT>         *<a name="line.176"></a>
<FONT color="green">177</FONT>         * @param value The input value to be converted.<a name="line.177"></a>
<FONT color="green">178</FONT>         * @return the converted String value.<a name="line.178"></a>
<FONT color="green">179</FONT>         * @throws Throwable if an error occurs converting to a String<a name="line.179"></a>
<FONT color="green">180</FONT>         */<a name="line.180"></a>
<FONT color="green">181</FONT>        protected String convertToString(Object value) throws Throwable {<a name="line.181"></a>
<FONT color="green">182</FONT>            return value.toString();<a name="line.182"></a>
<FONT color="green">183</FONT>        }<a name="line.183"></a>
<FONT color="green">184</FONT>    <a name="line.184"></a>
<FONT color="green">185</FONT>        /**<a name="line.185"></a>
<FONT color="green">186</FONT>         * Convert the input object into an output object of the<a name="line.186"></a>
<FONT color="green">187</FONT>         * specified type.<a name="line.187"></a>
<FONT color="green">188</FONT>         * &lt;p&gt;<a name="line.188"></a>
<FONT color="green">189</FONT>         * Typical implementations will provide a minimum of<a name="line.189"></a>
<FONT color="green">190</FONT>         * &lt;code&gt;String --&gt; type&lt;/code&gt; conversion.<a name="line.190"></a>
<FONT color="green">191</FONT>         *<a name="line.191"></a>
<FONT color="green">192</FONT>         * @param type Data type to which this value should be converted.<a name="line.192"></a>
<FONT color="green">193</FONT>         * @param value The input value to be converted.<a name="line.193"></a>
<FONT color="green">194</FONT>         * @return The converted value.<a name="line.194"></a>
<FONT color="green">195</FONT>         * @throws Throwable if an error occurs converting to the specified type<a name="line.195"></a>
<FONT color="green">196</FONT>         */<a name="line.196"></a>
<FONT color="green">197</FONT>        protected abstract Object convertToType(Class type, Object value) throws Throwable;<a name="line.197"></a>
<FONT color="green">198</FONT>    <a name="line.198"></a>
<FONT color="green">199</FONT>        /**<a name="line.199"></a>
<FONT color="green">200</FONT>         * Return the first element from an Array (or Collection)<a name="line.200"></a>
<FONT color="green">201</FONT>         * or the value unchanged if not an Array (or Collection).<a name="line.201"></a>
<FONT color="green">202</FONT>         *<a name="line.202"></a>
<FONT color="green">203</FONT>         * N.B. This needs to be overriden for array/Collection converters.<a name="line.203"></a>
<FONT color="green">204</FONT>         *<a name="line.204"></a>
<FONT color="green">205</FONT>         * @param value The value to convert<a name="line.205"></a>
<FONT color="green">206</FONT>         * @return The first element in an Array (or Collection)<a name="line.206"></a>
<FONT color="green">207</FONT>         * or the value unchanged if not an Array (or Collection)<a name="line.207"></a>
<FONT color="green">208</FONT>         */<a name="line.208"></a>
<FONT color="green">209</FONT>        protected Object convertArray(Object value) {<a name="line.209"></a>
<FONT color="green">210</FONT>            if (value == null) {<a name="line.210"></a>
<FONT color="green">211</FONT>                return null;<a name="line.211"></a>
<FONT color="green">212</FONT>            }<a name="line.212"></a>
<FONT color="green">213</FONT>            if (value.getClass().isArray()) {<a name="line.213"></a>
<FONT color="green">214</FONT>                if (Array.getLength(value) &gt; 0) {<a name="line.214"></a>
<FONT color="green">215</FONT>                    return Array.get(value, 0);<a name="line.215"></a>
<FONT color="green">216</FONT>                } else {<a name="line.216"></a>
<FONT color="green">217</FONT>                    return null;<a name="line.217"></a>
<FONT color="green">218</FONT>                }<a name="line.218"></a>
<FONT color="green">219</FONT>            }<a name="line.219"></a>
<FONT color="green">220</FONT>            if (value instanceof Collection) {<a name="line.220"></a>
<FONT color="green">221</FONT>                Collection collection = (Collection)value;<a name="line.221"></a>
<FONT color="green">222</FONT>                if (collection.size() &gt; 0) {<a name="line.222"></a>
<FONT color="green">223</FONT>                    return collection.iterator().next();<a name="line.223"></a>
<FONT color="green">224</FONT>                } else {<a name="line.224"></a>
<FONT color="green">225</FONT>                    return null;<a name="line.225"></a>
<FONT color="green">226</FONT>                }<a name="line.226"></a>
<FONT color="green">227</FONT>            }<a name="line.227"></a>
<FONT color="green">228</FONT>            return value;<a name="line.228"></a>
<FONT color="green">229</FONT>        }<a name="line.229"></a>
<FONT color="green">230</FONT>    <a name="line.230"></a>
<FONT color="green">231</FONT>        /**<a name="line.231"></a>
<FONT color="green">232</FONT>         * Handle Conversion Errors.<a name="line.232"></a>
<FONT color="green">233</FONT>         * &lt;p&gt;<a name="line.233"></a>
<FONT color="green">234</FONT>         * If a default value has been specified then it is returned<a name="line.234"></a>
<FONT color="green">235</FONT>         * otherwise a ConversionException is thrown.<a name="line.235"></a>
<FONT color="green">236</FONT>         *<a name="line.236"></a>
<FONT color="green">237</FONT>         * @param type Data type to which this value should be converted.<a name="line.237"></a>
<FONT color="green">238</FONT>         * @param value The input value to be converted<a name="line.238"></a>
<FONT color="green">239</FONT>         * @param cause The exception thrown by the &lt;code&gt;convert&lt;/code&gt; method<a name="line.239"></a>
<FONT color="green">240</FONT>         * @return The default value.<a name="line.240"></a>
<FONT color="green">241</FONT>         * @throws ConversionException if no default value has been<a name="line.241"></a>
<FONT color="green">242</FONT>         * specified for this {@link Converter}.<a name="line.242"></a>
<FONT color="green">243</FONT>         */<a name="line.243"></a>
<FONT color="green">244</FONT>        protected Object handleError(Class type, Object value, Throwable cause) {<a name="line.244"></a>
<FONT color="green">245</FONT>            if (log().isDebugEnabled()) {<a name="line.245"></a>
<FONT color="green">246</FONT>                if (cause instanceof ConversionException) {<a name="line.246"></a>
<FONT color="green">247</FONT>                    log().debug("    Conversion threw ConversionException: " + cause.getMessage());<a name="line.247"></a>
<FONT color="green">248</FONT>                } else {<a name="line.248"></a>
<FONT color="green">249</FONT>                    log().debug("    Conversion threw " + cause);<a name="line.249"></a>
<FONT color="green">250</FONT>                }<a name="line.250"></a>
<FONT color="green">251</FONT>            }<a name="line.251"></a>
<FONT color="green">252</FONT>    <a name="line.252"></a>
<FONT color="green">253</FONT>            if (useDefault) {<a name="line.253"></a>
<FONT color="green">254</FONT>                return handleMissing(type);<a name="line.254"></a>
<FONT color="green">255</FONT>            }<a name="line.255"></a>
<FONT color="green">256</FONT>    <a name="line.256"></a>
<FONT color="green">257</FONT>            ConversionException cex = null;<a name="line.257"></a>
<FONT color="green">258</FONT>            if (cause instanceof ConversionException) {<a name="line.258"></a>
<FONT color="green">259</FONT>                cex = (ConversionException)cause;<a name="line.259"></a>
<FONT color="green">260</FONT>                if (log().isDebugEnabled()) {<a name="line.260"></a>
<FONT color="green">261</FONT>                    log().debug("    Re-throwing ConversionException: " + cex.getMessage());<a name="line.261"></a>
<FONT color="green">262</FONT>                    log().debug("    " + DEFAULT_CONFIG_MSG);<a name="line.262"></a>
<FONT color="green">263</FONT>                }<a name="line.263"></a>
<FONT color="green">264</FONT>            } else {<a name="line.264"></a>
<FONT color="green">265</FONT>                String msg = "Error converting from '" + toString(value.getClass()) +<a name="line.265"></a>
<FONT color="green">266</FONT>                        "' to '" + toString(type) + "' " + cause.getMessage();<a name="line.266"></a>
<FONT color="green">267</FONT>                cex = new ConversionException(msg, cause);<a name="line.267"></a>
<FONT color="green">268</FONT>                if (log().isDebugEnabled()) {<a name="line.268"></a>
<FONT color="green">269</FONT>                    log().debug("    Throwing ConversionException: " + msg);<a name="line.269"></a>
<FONT color="green">270</FONT>                    log().debug("    " + DEFAULT_CONFIG_MSG);<a name="line.270"></a>
<FONT color="green">271</FONT>                }<a name="line.271"></a>
<FONT color="green">272</FONT>                BeanUtils.initCause(cex, cause);<a name="line.272"></a>
<FONT color="green">273</FONT>            }<a name="line.273"></a>
<FONT color="green">274</FONT>    <a name="line.274"></a>
<FONT color="green">275</FONT>            throw cex;<a name="line.275"></a>
<FONT color="green">276</FONT>    <a name="line.276"></a>
<FONT color="green">277</FONT>        }<a name="line.277"></a>
<FONT color="green">278</FONT>    <a name="line.278"></a>
<FONT color="green">279</FONT>        /**<a name="line.279"></a>
<FONT color="green">280</FONT>         * Handle missing values.<a name="line.280"></a>
<FONT color="green">281</FONT>         * &lt;p&gt;<a name="line.281"></a>
<FONT color="green">282</FONT>         * If a default value has been specified then it is returned<a name="line.282"></a>
<FONT color="green">283</FONT>         * otherwise a ConversionException is thrown.<a name="line.283"></a>
<FONT color="green">284</FONT>         *<a name="line.284"></a>
<FONT color="green">285</FONT>         * @param type Data type to which this value should be converted.<a name="line.285"></a>
<FONT color="green">286</FONT>         * @return The default value.<a name="line.286"></a>
<FONT color="green">287</FONT>         * @throws ConversionException if no default value has been<a name="line.287"></a>
<FONT color="green">288</FONT>         * specified for this {@link Converter}.<a name="line.288"></a>
<FONT color="green">289</FONT>         */<a name="line.289"></a>
<FONT color="green">290</FONT>        protected Object handleMissing(Class type) {<a name="line.290"></a>
<FONT color="green">291</FONT>    <a name="line.291"></a>
<FONT color="green">292</FONT>            if (useDefault || type.equals(String.class)) {<a name="line.292"></a>
<FONT color="green">293</FONT>                Object value = getDefault(type);<a name="line.293"></a>
<FONT color="green">294</FONT>                if (useDefault &amp;&amp; value != null &amp;&amp; !(type.equals(value.getClass()))) {<a name="line.294"></a>
<FONT color="green">295</FONT>                    try {<a name="line.295"></a>
<FONT color="green">296</FONT>                        value = convertToType(type, defaultValue);<a name="line.296"></a>
<FONT color="green">297</FONT>                    } catch (Throwable t) {<a name="line.297"></a>
<FONT color="green">298</FONT>                        log().error("    Default conversion to " + toString(type)<a name="line.298"></a>
<FONT color="green">299</FONT>                                + "failed: " + t);<a name="line.299"></a>
<FONT color="green">300</FONT>                    }<a name="line.300"></a>
<FONT color="green">301</FONT>                }<a name="line.301"></a>
<FONT color="green">302</FONT>                if (log().isDebugEnabled()) {<a name="line.302"></a>
<FONT color="green">303</FONT>                    log().debug("    Using default "<a name="line.303"></a>
<FONT color="green">304</FONT>                            + (value == null ? "" : toString(value.getClass()) + " ")<a name="line.304"></a>
<FONT color="green">305</FONT>                            + "value '" + defaultValue + "'");<a name="line.305"></a>
<FONT color="green">306</FONT>                }<a name="line.306"></a>
<FONT color="green">307</FONT>                return value;<a name="line.307"></a>
<FONT color="green">308</FONT>            }<a name="line.308"></a>
<FONT color="green">309</FONT>    <a name="line.309"></a>
<FONT color="green">310</FONT>            ConversionException cex =  new ConversionException("No value specified for '" +<a name="line.310"></a>
<FONT color="green">311</FONT>                    toString(type) + "'");<a name="line.311"></a>
<FONT color="green">312</FONT>            if (log().isDebugEnabled()) {<a name="line.312"></a>
<FONT color="green">313</FONT>                log().debug("    Throwing ConversionException: " + cex.getMessage());<a name="line.313"></a>
<FONT color="green">314</FONT>                log().debug("    " + DEFAULT_CONFIG_MSG);<a name="line.314"></a>
<FONT color="green">315</FONT>            }<a name="line.315"></a>
<FONT color="green">316</FONT>            throw cex;<a name="line.316"></a>
<FONT color="green">317</FONT>    <a name="line.317"></a>
<FONT color="green">318</FONT>        }<a name="line.318"></a>
<FONT color="green">319</FONT>    <a name="line.319"></a>
<FONT color="green">320</FONT>        /**<a name="line.320"></a>
<FONT color="green">321</FONT>         * Set the default value, converting as required.<a name="line.321"></a>
<FONT color="green">322</FONT>         * &lt;p&gt;<a name="line.322"></a>
<FONT color="green">323</FONT>         * If the default value is different from the type the<a name="line.323"></a>
<FONT color="green">324</FONT>         * &lt;code&gt;Converter&lt;/code&gt; handles, it will be converted<a name="line.324"></a>
<FONT color="green">325</FONT>         * to the handled type.<a name="line.325"></a>
<FONT color="green">326</FONT>         *<a name="line.326"></a>
<FONT color="green">327</FONT>         * @param defaultValue The default value to be returned<a name="line.327"></a>
<FONT color="green">328</FONT>         * if the value to be converted is missing or an error<a name="line.328"></a>
<FONT color="green">329</FONT>         * occurs converting the value.<a name="line.329"></a>
<FONT color="green">330</FONT>         * @throws ConversionException if an error occurs converting<a name="line.330"></a>
<FONT color="green">331</FONT>         * the default value<a name="line.331"></a>
<FONT color="green">332</FONT>         */<a name="line.332"></a>
<FONT color="green">333</FONT>        protected void setDefaultValue(Object defaultValue) {<a name="line.333"></a>
<FONT color="green">334</FONT>            useDefault = false;<a name="line.334"></a>
<FONT color="green">335</FONT>            if (log().isDebugEnabled()) {<a name="line.335"></a>
<FONT color="green">336</FONT>                log().debug("Setting default value: " + defaultValue);<a name="line.336"></a>
<FONT color="green">337</FONT>            }<a name="line.337"></a>
<FONT color="green">338</FONT>            if (defaultValue == null) {<a name="line.338"></a>
<FONT color="green">339</FONT>               this.defaultValue  = null;<a name="line.339"></a>
<FONT color="green">340</FONT>            } else {<a name="line.340"></a>
<FONT color="green">341</FONT>               this.defaultValue  = convert(getDefaultType(), defaultValue);<a name="line.341"></a>
<FONT color="green">342</FONT>            }<a name="line.342"></a>
<FONT color="green">343</FONT>            useDefault = true;<a name="line.343"></a>
<FONT color="green">344</FONT>        }<a name="line.344"></a>
<FONT color="green">345</FONT>    <a name="line.345"></a>
<FONT color="green">346</FONT>        /**<a name="line.346"></a>
<FONT color="green">347</FONT>         * Return the default type this &lt;code&gt;Converter&lt;/code&gt; handles.<a name="line.347"></a>
<FONT color="green">348</FONT>         *<a name="line.348"></a>
<FONT color="green">349</FONT>         * @return The default type this &lt;code&gt;Converter&lt;/code&gt; handles.<a name="line.349"></a>
<FONT color="green">350</FONT>         */<a name="line.350"></a>
<FONT color="green">351</FONT>        protected abstract Class getDefaultType();<a name="line.351"></a>
<FONT color="green">352</FONT>    <a name="line.352"></a>
<FONT color="green">353</FONT>        /**<a name="line.353"></a>
<FONT color="green">354</FONT>         * Return the default value for conversions to the specified<a name="line.354"></a>
<FONT color="green">355</FONT>         * type.<a name="line.355"></a>
<FONT color="green">356</FONT>         * @param type Data type to which this value should be converted.<a name="line.356"></a>
<FONT color="green">357</FONT>         * @return The default value for the specified type.<a name="line.357"></a>
<FONT color="green">358</FONT>         */<a name="line.358"></a>
<FONT color="green">359</FONT>        protected Object getDefault(Class type) {<a name="line.359"></a>
<FONT color="green">360</FONT>            if (type.equals(String.class)) {<a name="line.360"></a>
<FONT color="green">361</FONT>                return null;<a name="line.361"></a>
<FONT color="green">362</FONT>            } else {<a name="line.362"></a>
<FONT color="green">363</FONT>                return defaultValue;<a name="line.363"></a>
<FONT color="green">364</FONT>            }<a name="line.364"></a>
<FONT color="green">365</FONT>        }<a name="line.365"></a>
<FONT color="green">366</FONT>        <a name="line.366"></a>
<FONT color="green">367</FONT>        /**<a name="line.367"></a>
<FONT color="green">368</FONT>         * Provide a String representation of this converter.<a name="line.368"></a>
<FONT color="green">369</FONT>         *<a name="line.369"></a>
<FONT color="green">370</FONT>         * @return A String representation of this converter<a name="line.370"></a>
<FONT color="green">371</FONT>         */<a name="line.371"></a>
<FONT color="green">372</FONT>        public String toString() {<a name="line.372"></a>
<FONT color="green">373</FONT>            return toString(getClass()) + "[UseDefault=" + useDefault + "]";<a name="line.373"></a>
<FONT color="green">374</FONT>        }<a name="line.374"></a>
<FONT color="green">375</FONT>    <a name="line.375"></a>
<FONT color="green">376</FONT>        // ----------------------------------------------------------- Package Methods<a name="line.376"></a>
<FONT color="green">377</FONT>    <a name="line.377"></a>
<FONT color="green">378</FONT>        /**<a name="line.378"></a>
<FONT color="green">379</FONT>         * Accessor method for Log instance.<a name="line.379"></a>
<FONT color="green">380</FONT>         * &lt;p&gt;<a name="line.380"></a>
<FONT color="green">381</FONT>         * The Log instance variable is transient and<a name="line.381"></a>
<FONT color="green">382</FONT>         * accessing it through this method ensures it<a name="line.382"></a>
<FONT color="green">383</FONT>         * is re-initialized when this instance is<a name="line.383"></a>
<FONT color="green">384</FONT>         * de-serialized.<a name="line.384"></a>
<FONT color="green">385</FONT>         *<a name="line.385"></a>
<FONT color="green">386</FONT>         * @return The Log instance.<a name="line.386"></a>
<FONT color="green">387</FONT>         */<a name="line.387"></a>
<FONT color="green">388</FONT>        Log log() {<a name="line.388"></a>
<FONT color="green">389</FONT>            if (log == null) {<a name="line.389"></a>
<FONT color="green">390</FONT>                log = LogFactory.getLog(getClass());<a name="line.390"></a>
<FONT color="green">391</FONT>            }<a name="line.391"></a>
<FONT color="green">392</FONT>            return log;<a name="line.392"></a>
<FONT color="green">393</FONT>        }<a name="line.393"></a>
<FONT color="green">394</FONT>    <a name="line.394"></a>
<FONT color="green">395</FONT>        /**<a name="line.395"></a>
<FONT color="green">396</FONT>         * Change primitve Class types to the associated wrapper class.<a name="line.396"></a>
<FONT color="green">397</FONT>         * @param type The class type to check.<a name="line.397"></a>
<FONT color="green">398</FONT>         * @return The converted type.<a name="line.398"></a>
<FONT color="green">399</FONT>         */<a name="line.399"></a>
<FONT color="green">400</FONT>         Class primitive(Class type) {<a name="line.400"></a>
<FONT color="green">401</FONT>            if (type == null || !type.isPrimitive()) {<a name="line.401"></a>
<FONT color="green">402</FONT>                return type;<a name="line.402"></a>
<FONT color="green">403</FONT>            }<a name="line.403"></a>
<FONT color="green">404</FONT>    <a name="line.404"></a>
<FONT color="green">405</FONT>            if (type == Integer.TYPE) {<a name="line.405"></a>
<FONT color="green">406</FONT>                return Integer.class;<a name="line.406"></a>
<FONT color="green">407</FONT>            } else if (type == Double.TYPE) {<a name="line.407"></a>
<FONT color="green">408</FONT>                return Double.class;<a name="line.408"></a>
<FONT color="green">409</FONT>            } else if (type == Long.TYPE) {<a name="line.409"></a>
<FONT color="green">410</FONT>                return Long.class;<a name="line.410"></a>
<FONT color="green">411</FONT>            } else if (type == Boolean.TYPE) {<a name="line.411"></a>
<FONT color="green">412</FONT>                return Boolean.class;<a name="line.412"></a>
<FONT color="green">413</FONT>            } else if (type == Float.TYPE) {<a name="line.413"></a>
<FONT color="green">414</FONT>                return Float.class;<a name="line.414"></a>
<FONT color="green">415</FONT>            } else if (type == Short.TYPE) {<a name="line.415"></a>
<FONT color="green">416</FONT>                return Short.class;<a name="line.416"></a>
<FONT color="green">417</FONT>            } else if (type == Byte.TYPE) {<a name="line.417"></a>
<FONT color="green">418</FONT>                return Byte.class;<a name="line.418"></a>
<FONT color="green">419</FONT>            } else if (type == Character.TYPE) {<a name="line.419"></a>
<FONT color="green">420</FONT>                return Character.class;<a name="line.420"></a>
<FONT color="green">421</FONT>            } else {<a name="line.421"></a>
<FONT color="green">422</FONT>                return type;<a name="line.422"></a>
<FONT color="green">423</FONT>            }<a name="line.423"></a>
<FONT color="green">424</FONT>        }<a name="line.424"></a>
<FONT color="green">425</FONT>    <a name="line.425"></a>
<FONT color="green">426</FONT>        /**<a name="line.426"></a>
<FONT color="green">427</FONT>         * Provide a String representation of a &lt;code&gt;java.lang.Class&lt;/code&gt;.<a name="line.427"></a>
<FONT color="green">428</FONT>         * @param type The &lt;code&gt;java.lang.Class&lt;/code&gt;.<a name="line.428"></a>
<FONT color="green">429</FONT>         * @return The String representation.<a name="line.429"></a>
<FONT color="green">430</FONT>         */<a name="line.430"></a>
<FONT color="green">431</FONT>        String toString(Class type) {<a name="line.431"></a>
<FONT color="green">432</FONT>            String typeName = null;<a name="line.432"></a>
<FONT color="green">433</FONT>            if (type == null) {<a name="line.433"></a>
<FONT color="green">434</FONT>                typeName = "null";<a name="line.434"></a>
<FONT color="green">435</FONT>            } else if (type.isArray()) {<a name="line.435"></a>
<FONT color="green">436</FONT>                Class elementType = type.getComponentType();<a name="line.436"></a>
<FONT color="green">437</FONT>                int count = 1;<a name="line.437"></a>
<FONT color="green">438</FONT>                while (elementType.isArray()) {<a name="line.438"></a>
<FONT color="green">439</FONT>                    elementType = elementType .getComponentType();<a name="line.439"></a>
<FONT color="green">440</FONT>                    count++;<a name="line.440"></a>
<FONT color="green">441</FONT>                }<a name="line.441"></a>
<FONT color="green">442</FONT>                typeName = elementType.getName();<a name="line.442"></a>
<FONT color="green">443</FONT>                for (int i = 0; i &lt; count; i++) {<a name="line.443"></a>
<FONT color="green">444</FONT>                    typeName += "[]";<a name="line.444"></a>
<FONT color="green">445</FONT>                }<a name="line.445"></a>
<FONT color="green">446</FONT>            } else {<a name="line.446"></a>
<FONT color="green">447</FONT>                typeName = type.getName();<a name="line.447"></a>
<FONT color="green">448</FONT>            }<a name="line.448"></a>
<FONT color="green">449</FONT>            if (typeName.startsWith("java.lang.") ||<a name="line.449"></a>
<FONT color="green">450</FONT>                typeName.startsWith("java.util.") ||<a name="line.450"></a>
<FONT color="green">451</FONT>                typeName.startsWith("java.math.")) {<a name="line.451"></a>
<FONT color="green">452</FONT>                typeName = typeName.substring("java.lang.".length());<a name="line.452"></a>
<FONT color="green">453</FONT>            } else if (typeName.startsWith(PACKAGE)) {<a name="line.453"></a>
<FONT color="green">454</FONT>                typeName = typeName.substring(PACKAGE.length());<a name="line.454"></a>
<FONT color="green">455</FONT>            }<a name="line.455"></a>
<FONT color="green">456</FONT>            return typeName;<a name="line.456"></a>
<FONT color="green">457</FONT>        }<a name="line.457"></a>
<FONT color="green">458</FONT>    }<a name="line.458"></a>




























































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